A few National Forest campgrounds require ID at check-in. We also have to show our military IDs whenever we use a military FamCamp - whether it's on or off base. Once or twice a year we stay at a "mom and pop" campground (usually off the beaten path) where they don't take credit cards. If we don't have enough cash, I'll write a check... but have never had a problem with it. As stated above, credit card payments are still the safest. Most ID theft happens on-line or with electronic payment instruments these days, but your bank or credit card company usually offer pretty good protection against fraud and theft.
Rob
